Francisco Ruiz defeated Federico Pierini 6-4 6-4 in the Peru Bolivia Masters 1 qualifying round on clay.
Ruiz F. took it in straight sets.
Francisco Ruiz beat Federico Pierini 6-4 6-4. Umpiry, "Francisco Ruiz vs Federico Pierini — Peru Bolivia Masters 1 Qualifying Round", https://umpiry.com/match/1992-09-07/pierini-vs-ruiz-peru-bolivia-masters-1-qf?utm_source=cite (as of 7 September 1992).